Hydrogen Gas Dryers - PD Series

  • Achieves low dew points
  • Removes only water vapor
  • Continuous drying operation
  • Requires no electricity
  • Maintenance-free operation

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The PD Series Gas Dryers from Perma Pure are advanced membrane-based gas drying systems that utilize proprietary Nafion tubing technology to continuously remove water vapor from gas streams. These dryers achieve very low dew points while operating across a wide range of temperatures, pressures, and flow rates, making them suitable for high-performance and high-flow gas drying applications. The system operates by transferring moisture from the sample gas stream to a counter-flowing purge gas through the Nafion tube walls. This selective permeation process removes only water vapor without affecting other gas components. The dryers function without electricity, moving parts, or routine maintenance, ensuring reliable and passive operation. Available models include PD-50T, PD-100T, and PD-200T, with varying flow capacities and configurations to suit different application requirements.

Use Cases

  • High-performance, high-flow gas drying applications
  • Gas conditioning systems requiring low moisture content
  • Analytical and process gas drying

Capabilities

  • Continuous gas drying using Nafion membrane technology
  • Selective removal of water vapor without altering gas composition
  • Operates with counter-flow purge gas configuration
  • Supports a wide range of flow rates and operating conditions
  • Passive operation without electrical power or mechanical components
Perma Pure LLC

Perma Pure is a leading provider of high-performance gas conditioning solutions for the hydrogen industry. Leveraging proprietary Nafion membrane technology, the company specializes in moisture management for PEM fuel cells and electrolyzers, offering humidifiers and dryers that optimize system efficiency, reliability, and lifespan.

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